Texas Instruments INA296A4QDRQ1

Overview

INA296A4QDRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (−40°C to 125°C) ultra-precise bidirectional current sense amplifier with 100V/V fixed gain, −5V to 110V common-mode input range, 1.1MHz bandwidth, and ±10µV max input offset voltage. It enables high-accuracy shunt-based current monitoring in automotive high-side, low-side, or inline configurations - e.g., real-time battery charge/discharge control in 48V BMS.

For engineers reviewing the INA296A4QDRQ1 datasheet, INA296A4QDRQ1 pinout, INA296A4QDRQ1 application, or INA296A4QDRQ1 equivalent, key selection criteria include its 100V/V gain accuracy (±0.015% max), 166dB CMRR, 8V/µs slew rate, 1µs 1% settling time, and functional safety documentation support for ISO 26262-compliant systems.

Technical Context

The INA296A4QDRQ1 uses a zero-drift, precision topology enabling ±10µV offset and ±0.015% gain error across −40°C to 125°C. Its input stage operates independently of supply voltage, supporting common-mode voltages up to 110V while powered from only 2.7V–20V.

It delivers bidirectional sensing via dual reference inputs (REF1/REF2), allowing output centering at any point between GND and VS. The 1.1MHz bandwidth and 8V/µs slew rate support fast overcurrent detection in DC/DC converters and motor drives without signal distortion.

Key Specifications

Pinout & Package

INA296A4QDRQ1 is packaged in an 8-pin SOIC (D) package (4.9mm × 6mm), suitable for automotive PCB layouts requiring thermal robustness and creepage clearance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current sense amplifier applications.

Compared with INA240A4QDRQ1 and MAX40056ATA+T, the INA296A4QDRQ1 uniquely combines AEC-Q100 Grade 1 qualification, true bidirectional operation via dual reference inputs, and ultra-low offset (±10µV) at 1.1MHz - making it the only option for ASIL-B/C-compliant, high-precision, bidirectional current sensing in 48V–110V automotive power systems.

Availability

INA296A4QDRQ1 is available at Aetrix Electronics and suitable for automotive battery management systems, 48V DC/DC converters, and smart junction box designs requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.

Supply support for INA296A4QDRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions for automotive, industrial, and personal electronics markets.

The INA296x-Q1 product line was designed specifically for high-accuracy, high-speed, AEC-Q100-qualified current sensing in next-generation automotive electrification systems - including 48V mild-hybrid architectures, traction inverters, and intelligent power distribution units.

FAQ

What is the maximum common-mode voltage the INA296A4QDRQ1 can withstand during normal operation?

The INA296A4QDRQ1 operates over a common-mode input voltage range of −5V to 110V. This allows reliable high-side sensing on 48V and 60V automotive bus rails. Its survival rating extends to −20V to 120V, protecting against load dump and jump-start transients without damage. Operation remains precise across this full range due to its supply-independent input architecture.

Does the INA296A4QDRQ1 support bidirectional current measurement, and how is it configured?

Yes, the INA296A4QDRQ1 supports true bidirectional current sensing. Configuration is achieved by applying appropriate voltages to REF1 and REF2 pins - for example, tying both to VS/2 centers the output at mid-supply, enabling positive/negative output swing corresponding to forward/reverse current flow. This eliminates the need for external level-shifting circuitry in battery charge/discharge monitoring.

What is the gain error specification for the INA296A4QDRQ1, and how does it vary with temperature?

The INA296A4QDRQ1 has a maximum gain error of ±0.015% at room temperature, with a drift of ±2 ppm/°C over −40°C to +125°C. This translates to <±0.025% total error across the full automotive temperature range - critical for maintaining calibration integrity in long-lifetime BMS and powertrain applications without periodic recalibration.

Can the INA296A4QDRQ1 be used in low-side current sensing configurations?

Yes, the INA296A4QDRQ1 supports low-side, high-side, and inline current sensing. In low-side configurations, connect IN+ to the load side of the shunt and IN− to ground. Its −5V to 110V common-mode range accommodates ground-referenced measurements while maintaining immunity to ground bounce and noise - unlike conventional amplifiers limited to 0V–VS input ranges.

What package type is supplied for the INA296A4QDRQ1, and what are its thermal characteristics?

The INA296A4QDRQ1 is supplied in an 8-pin SOIC (D) package (4.9mm × 6mm). Its junction-to-ambient thermal resistance (R_θJA) is 122.9°C/W, and junction-to-board (R_θJB) is 68.8°C/W. These values enable reliable operation at 125°C ambient with standard PCB copper pour, supporting placement near high-power components in compact automotive ECUs.